Sharpening attachment for wood-pulp grinders.



narra STAS .arr einen.

ALLEN CURTIS. OF GLENS FAJLS, NEW YORK, ASSIGNOR TO IN'J.IER\TA."LIONAL.PAPER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

SHARPENING ATTACHMENT FOR WOOD-PULP GRINDERS.

Application led August 31, 1908, Serial No. 451,068. Renewed July 3,1913.

To u/l /r/zon'z *it mf/ i/ concern.'

`Bc it known that l, ,-XLLEN CURTIS, a citizen of the hiited States,residing a'tand whose posi-ollicc address is Glens Falls, lVarrencounty` New York, have invented certain new and useful lmproven'ients inASharpening Attachments for Vood-Pulp Grinders, and l do hereby declarethe following to be a full. clear` and exact description of theinvention, such as will enable others skilled in the art to which itapperlains to make and use the same.

My invention relates to certain new and useful improvements insharpening attachments for wood pulp grinders, and is designed to put atthe disposition of the operator means for sharpening the grindstone moreexpeditimislf'and with greater uniformity and certainty` than hasheretofore been customary in the art.

In the accompanying drawing, Figure l represents an cud view of the mainportions of a wood pulp grinder and shows the rela.- tion of theattachment for sharpening the grind-stone in accordance with myinvention; Fig. 9. represents, on a larger scale, a front elevation ofthe attachment, partly in section; Fig. il represents atop plan view ofthe attachment and shows the relation of the barring or sharpening wheelto the grind-stone; Fig. 4 represents a sectional view taken on a planeindicated by the line 4, l of Fig. 2.

lirnilar letters of reference indicate simi- 351:11' parts throughoutthe several Views.

Referring to the drawing, A indicates the main casing of a Wood pulpgrinder, provided with the usual pockets and hydraulic cylindersforpresenting the Wood to the grind-stone, as is well understood by thoseskilled in the art. The attachment, constituting my invention, issecured in any suitable manner to the'bed-plate or standards of thegrinder, as, for instance, by means of angle irons a bolted to theuprights b, which angle irons support the head portions c of thehydraulic cylinder d and the guide-way c of the sliding tool head fwhich i: mounted upon a rod g attached by a cross head li to .the pistonrod 'i of the hydraulic cylinder. The hydraulic cylinder, as is usual.lis provided with the customary ports at its opposite ends, for the inletand exi t of the actuating fluid; whereby, through the intermediacy ofsuitable cocks or valves Specification of-Letters Patent.

latented Aug. 12,1912.,

Serial No. 777,338.

(not shown), the piston n of the hydraulic cylinder i may be carriedeither to the r'ght o r to the left, at the will of the operator. ln sodoing, the piston rod 2'., the cross rod fr. and the tool holder rod gpartake of the motion of the piston, and therefore carry the burring orsharpening wheel la across the face or peripheryof the rotatinggrindstone B.

The burring or sharpening wheel Ic, mounted in a suitable yoke, as Z, soas to revolve freely, is adapted to be moved toward or from thegrind-stone B, by means of a crank handle m, as is usual in devices ofthis general character. y

The operation of the invention will be apparent: The attachment, securedin place as shown and described, is normally at such adjustment that theburring wheel is out of the path of movement of the revolvinggrind-stone B and the piston n. is at the innermost limit ofitsinovement, in which position it is maintained, thereby withdrawingthe rods 'i and r/'froin project-ing materially beyond the bed-plate ofthe machine. In this adjustment, therefore, the attachment takes up butlittle room and its main parts are correspondingl protected againstaccidental breakage. l en it is desired to sharpen4 the grind-stone, thebarring or sharpening wheel 7.2 is advanced toward the stone' by tneanslof the crank handle m mounted upon the usual feed screw engaging ascrew-threaded.nut or the like on the crossslide to which the yoke Z inwhich the burring wheel la is mounted, is attached. By an appropriatemanipulation of' the hydraulic cocker cocks governing ,the admission andexit of the actuating fluid with respect to the hydraulic cylinder andits piston. the longitudinal slide f carries the burring wheelprogressively across the face ofL the revolving grind-stone, and with aregnlarity and speed commensurate with the action of the hydraulic fluidupon the piston. ln practice. it is found feasible to carry the hurringwheel across the face of the grindstone within a very few seconds, theattention of but a single operator being required to insure its uniformand eiiicient action. By reversing the position oli the eockor cocks.either manually or automatically` the hui-ring Wheel. after movingventirely across the face of the grind-stone, is carriedl back intlieopposile direction, and these .reciproca- 'ice tions are repeateduntil the grinStone is sliairpenedt-o the desired degree. find, inpractice? that the action of the hurring 'wheel upon the 'grind-stone,under the uniform .i will and push o the rod g connected to the quicklymoving hydraulic piston rofl fi, is of auch' u character that in spiteof the fact that the usuel rind-stone 'toi' wood pulp grindJ e has;Setter and harder plaveee in its, pelo; i iphery, there is practicallyno tendency for the hui-ring Wheel to obrado the softer spots to egreater depth than the harder spots. lliie i@ et greet importance from apractical e idpoirit5 inasmuch :is the slow moving; mrring wheel in themachines heretofore employed have always required two men to operatethem and have had a more or lees util detailing; action upon the grind-,A gjeripliery, to such au extent that in TFO. ni #t ce .eS'it has heenpractically indispensable to ern-ploy fitter the action of the bur ring'wheeh u. supplemental hand operated fue' mechanism, in order to removethe irregularities referred to. Nothing of this liiinil required or isdesirable for grind.- etoucu which have been sharpenedV by the emx nientof the iipi'mretus herein flescri'oecl. 'thus tiescrihetlmjilwention,whet l' omini ist Lot/0,32@

l. l Wood pulp griuilei' provided with. :i griufl-Stone-shaipener coAeisting4 of :i hurring or sharpening u'llcel, having' menus for movingit into Contact with the grimLStone surface, :i reciprocating slide forsont wheel. a hydraulic piston and cylinrler` and connections betweenthe tool :slide und the pistou for reciprocating the bui'liug wheelhaelt `and forth across the tace of the Igrind-etoile;

substantially as described.

i7.. A wood pulp grinder provided with u. grin(letoneesharpenerconsisting of :i burring or sharpening Wheel, having ineens for movingit into Contact with the grind-Stone surface, a reciprocating slidei''or said wheel, o' hydraulic cylinder located immediately helow theslide :intl having a guide-Way upon which the slide travels, a. pistonand pistoni'otl 'for Suid cylinder., un actuating roti` for the Slide,und a cross-hei@ for connecting 'the piston rod and Slide rofl;substantially is (lescribed.

ln testimony whereof l my signature in presence of two Witnesses.

lllfitnefsseo

